From ded9f93bae8ab9650aeb4c41bf661e3c35ac14ea Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jackpot51@gmail.com>
Date: Tue, 30 Aug 2022 10:32:16 -0600
Subject: [PATCH] 0.3.3 - Use PHYSMAP_NO_CACHE for Dma

---
 Cargo.toml    | 2 +-
 src/io/dma.rs | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/Cargo.toml b/Cargo.toml
index 38ac5ee..8121d74 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "redox_syscall"
-version = "0.3.2"
+version = "0.3.3"
 description = "A Rust library to access raw Redox system calls"
 license = "MIT"
 authors = ["Jeremy Soller <jackpot51@gmail.com>"]
diff --git a/src/io/dma.rs b/src/io/dma.rs
index f496a1e..10a3eb6 100644
--- a/src/io/dma.rs
+++ b/src/io/dma.rs
@@ -95,7 +95,7 @@ pub struct Dma<T: ?Sized> {
 
 impl<T> Dma<T> {
     pub fn from_physbox_uninit(phys: PhysBox) -> Result<Dma<MaybeUninit<T>>> {
-        let virt = unsafe { crate::physmap(phys.address, phys.size, crate::PHYSMAP_WRITE)? } as *mut MaybeUninit<T>;
+        let virt = unsafe { crate::physmap(phys.address, phys.size, crate::PHYSMAP_NO_CACHE | crate::PHYSMAP_WRITE)? } as *mut MaybeUninit<T>;
 
         Ok(Dma {
             phys,
@@ -156,7 +156,7 @@ impl<T> Dma<[T]> {
         assert!(len <= max_len);
 
         Ok(Dma {
-            virt: unsafe { slice::from_raw_parts_mut(crate::physmap(phys.address, phys.size, crate::PHYSMAP_WRITE)? as *mut MaybeUninit<T>, len) } as *mut [MaybeUninit<T>],
+            virt: unsafe { slice::from_raw_parts_mut(crate::physmap(phys.address, phys.size, crate::PHYSMAP_NO_CACHE | crate::PHYSMAP_WRITE)? as *mut MaybeUninit<T>, len) } as *mut [MaybeUninit<T>],
             phys,
         })
     }